How do you route the serpentine belt for a 1990 chevy caprice 350 with a/c and 6 pulleys?

It is possible to upgrade a 1987 Chevy 350 engine to a serpentine belt assembly using parts from a 1994 Chevy small block engine. However, there are some differences between the two engines that may affect compatibility.
One major difference between the two engines is the placement of the alternator. On the 1987 engine, the alternator is typically mounted on the driver's side of the engine. On the 1994 engine, the alternator is typically mounted on the passenger's side of the engine. This means that the brackets and pulleys for the serpentine belt assembly may be different between the two engines.
Another factor to consider is the number of pulleys on the serpentine belt assembly. Some 1994 small block engines were equipped with additional accessories, such as air conditioning or power steering, that require extra pulleys. If your 1987 engine does not have these accessories, you may need to modify the serpentine belt assembly to remove the extra pulleys.
To ensure that the serpentine belt assembly from the 1994 engine will fit your 1987 engine, it is recommended that you compare the parts and brackets from both engines side by side to identify any differences.

Application:
With A/C

Kia_Sedona_2002-2006
Accessory Drive Belts

• ACCESSORY BELT ROUTING
• INSPECTION
• REMOVAL & INSTALLATION

Print

Accessory Belt Routing

Fig. Accessory serpentine belt routing-3.5L engine

Fig. Accessory serpentine belt routing-3.5L engine

Fig. Accessory serpentine belt (A) routing-3.8L engine

Inspection

Inspect the drive belt for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately.

Removal & Installation

1. Disconnect the negative battery cable.
2. Rotate the auto tensioner clockwise to release tension, then remove the drive belt.

To install:

1. Install drive belt (A). Route the belt over the components in the following order: Crankshaft pulley - A/C pulley - idler pulley - generator pulley - water pump pulley - P/S pump pulley - tensioner pulley.
2. Rotate auto tensioner arm in the counter-clockwise moving auto tensioner pulley bolt with wrench.
3. After putting belt on auto tensioner pulley, release the auto tensioner pulley slowly.
   
   

   Fig. Accessory serpentine belt routing-3.5L engine
   
   
   

   Fig. Accessory serpentine belt (A) routing-3.8L engine
   

Pop the hood of the car and locate the serpentine belt routing diagram. The diagram on the 2003 Chevrolet Impala is on top of the fan shroud. The diagram will be a picture of all of the accessory pulleys and how the serpentine belt is routed among the pulleys. This diagram will give you the exact direction for routing the new belt onto the pulleys. If you cannot find a serpentine belt routing diagram, take a notepad and pen and draw out the exact routing diagram of the old belt across the pulleys.

2 Locate the serpentine belt tensioner. It is located below the alternator on the left front side of the engine. The tensioner on the 3.4 liter, 3.5 liter and the 3.9 liter engines will require a 3/8 ratchet to release the belt tensioner. The 3.8 liter engine will require a ratchet and a 15 mm socket for the belt tensioner. Rotate the belt tensioner clockwise to loosen and remove the belt from the belt tensioner pulley.

3 Slide the old belt from the belt tensioner pulley. Remove the belt from the remaining pulleys and pull the belt from the engine compartment.

4 Route the new belt across the crankshaft pulley first. The crankshaft pulley is the big pulley on the bottom of the engine in the center. Then route the serpentine belt across the remaining pulleys as directed by the serpentine belt routing diagram. Leave the belt tensioner pulley for last.

5 Rotate the belt tensioner clockwise again to relieve the tension and slide the new belt across the top of the belt tensioner pulley. Release the belt tensioner and the belt will tighten up as the tensioner applies pressure to the belt. Make sure the new belt is properly seated in all the pulleys.

6 Crank the engine and inspect the belt again to make sure that it stays seated in the pulleys.

Read more: How to Replace a Serpentine Belt on a 2003 Chevrolet Impala ' eHow.co.uk http://www.ehow.co.uk/how_6120665_replace-belt-2003-chevrolet-impala.html#ixzz1Yi6QLAjb

2.8L and 3.1L Air Pump Belt

1. Disconnect the negative battery cable.
2. Loosen the air pump.
3. Remove the worn belt.

To install:

1. Adjust the belt to specifications and tighten the pump mounting bolts.
2. Connect the negative battery cable.

2.3L Power Steering Belt

1. Disconnect the negative battery cable.
2. Loosen the adjustment bolts.
3. Remove the power steering belt from the pulley.

To install:

1. Route the belt around the pulley.
2. Adjust the belt to specifications, then tighten the adjustment bolts.
3. Connect the negative battery cable.

See Figures 6 through 15

Fig. Fig. 6: Unfasten the retaining bolts...

Fig. Fig. 7: ... then remove the serpentine belt guard

Fig. Fig. 8: ...

Fig. Fig. 9: ... then remove the serpentine belt

1. Remove the belt. Clean the accessory drive belt surfaces.

Fig. Fig. 10: Serpentine drive belt routing-2.2L engine

Fig. Fig. 11: Removal and installation of the serpentine belt-2.3L engine

Fig. Fig. 12: Serpentine belt routing-2.5L engine with and without A/C

Fig. Fig. 13: Use an 18mm box end wrench on the pulley nut to rotate the tensioner on the 3.8L engine

Fig. Fig. 14: in. breaker bar to rotate the tensioner

Fig. Fig. 15: On the 3.4L, use a box end wrench, then rotate the tensioner clockwise and remove the serpentine belt

Remove the belt guard or coolant recovery reservoir as required.

how do you route a serpentine belt for a 1988 chevrolet 350 ci with a ac. and airpump 2500 series truck

Serpentine belts are easy to change. The key is knowing where the 1/2" square drive tensioner is and to remove tension to the belt at this point.

If you remove the belt, it's easy to put the new one on because the pulleys are designed with grooves for the groove side of the belt, and smooth pulleys for the smooth back of the belt to ride on the pulleys.

Just go over, under, over, under until the belt is threaded on, except for the last idler pulley which is smooth.

Use the 1/2" breaker bar to turn the pulley until one can slip the belt onto the last 'idler' pulley and you're done.

Click on the following direct Link. It has several Serpentine Diagrams; one of which matches your specific engine and options (ex: AC/No AC etc).
Regarding HOW:
Standard Rule to Removal the Serpentine Belt:
1. Find the Tensioner(s). (See Diagrams on Link)
2. Using a Serpentine Belt Tensioner Tool, Or Wrench OR Ratchet, Rotate/Move the Tensioner USING THE AVAILABLE NUT OR OPENING (3/8ths or 1/2 inch square opening) away from contact with the belt and towards the area where the belt is not in contact with the Tensioner Pulley. The Tensioner is spring loaded, and is hard to rotate/move.
3. Remove the loosened belt off one of the other more easily accessed Pulleys.
Standard Rules for Installing the Serpentine Belt:
a. Pick a Pulley that is most easily accessed. This will usually be on top. This will be the last Pulley that the belt will go on.
b. Using the Diagram: Install the new Serpentine Belt on the remainder of the Pulleys....over, under, left right.
c. Using a Serpentine Belt Tensioner Tool or Wrench or Ratchet Tool: Rotate/Move the Tensioner Pulley/Arm "away" from Belt contact area on the Tensioner. This spring is pretty hard and with a new belt, it will be even harder to install. Rotate/Move this to as-close to the maximum allowed inorder to have enough slack in the belt to get it up and over the last pulley.
d. Using your other hand - Pull the Belt up and over the Last remaining Pulley.
e. Before releasing the pressure on the Tensioner, visually inspect the remainder Pulleys and the Belts' Positioning on them.
Let me know if this helped...
http://www.2carpros.com/car_repair_information/year/1995/make/chevrolet/model/caprice/1995_chevrolet_caprice_drive_belt_routing_diagram.htm

here are 4 diff. type of diagram.
Depend on how many pulley you have.
Let me know if this help you.

ONE OF THE PULLEYS ARE WORN OUT AND NOT ALIGNED PROPERLY WITH THE OTHERS. LOOK AT THE TENSIONER AND IDLER PULLEYS. ONE OF THESE COULD BE THE CAUSE. REMOVE THE SERPENTINE BELT AND ROTATE THE PULLEYS BY HAND TO SEE WHICH ONE IS EITHER SQUEAKING OR LOOSE ON ITS BEARING. REPLACE THE BAD ONE AND YOU SHOULD BE ALL SET. HOPE THIS HELPS. PLEASE KEEP ME POSTED. THANKS FOR AN HONEST RATING AND FOR USING FIX-YA. GOOD LUCK

try autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you